10 × 4 = 4 × 7 = 2 × 5 = 9 × 4 = 5 × 2 =
4 × 5 = 5 × 2 = 10 × 4 = 2 × 5 = 6 × 4 =
2 × 5 = 4 × 9 = 5 × 2 = 4 × 8 = 10 × 4 =
4 × 6 = 5 × 2 = 10 × 4 = 7 × 4 = 2 × 5 =
2 × 5 = 8 × 4 = 5 × 2 = 10 × 4 = 9 × 4 =
10 × 4 = 5 × 2 = 4 × 9 = 2 × 5 = 4 × 8 =